Image: Rebel Wolves / Bandai NamcoOfficial screenshot from Rebel Wolves / Bandai Namco.
Make It Rain is earned by making an enemy explode with Blood Surge. You have to unlock the ability first by drinking Xanthe's blood, so it comes later in the game.
Svartrau CathedralSvartrau Cathedral is the large church in the capital, richly decorated with art, stained glass and tapestries. It holds the tallest city scouting tower, a key fresco and a phial of Xanthe's blood nearby.
XantheXanthe is the oldest of Brencis's Boyars. She rules the southeast of Vale Sangora, where she digs up ancient secrets for Brencis's army and raises his Blood Guards.Unlock Blood Surge, then use it on a weaker enemy until they burst. The trophy pops on the first explosion.
You unlock it by drinking Xanthe's blood. That happens after her boss fight, or earlier by opening the treasury chest in the Svartrau Cathedral with the storage room key.
Enemies with a skull icon are too tough for the effect, so aim it at regular foes.